Hot corrosion
Hot Corrosion Behavior of Superalloy in Different Corrosive Environments
... Hot corrosion is a serious problem in aircraft, marine, industrial and land-base gas ...investigates hot corrosion behav- iour of superfer 800H exposed to two different molten salt ...
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Hot Corrosion & Erosion Problems in Coal Based Power Plants in India and Possible Solutions – A Review
... Chemical Vapor Deposition (CVD) process is a versatile process that can be used to deposit nearly any metal as well as non metal such as carbon or silicon [1]. The first step is the production of metal vapours. Several ...
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Impact and Hot Corrosion Properties of Levitation Melted NiAl Polycrystals with Different Purity
... Higher and lower purity NiAl polycrystals with the different levels in impurities were produced by levitation melting, and they had larger or smaller grain. The hardness in grains decreased linearly with increase in ...
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Hot Corrosion Behavior of Functional Graded Material Thermal Barrier Coating (RESEARCH NOTE)
... to hot corrosion, ...h hot corrosion ...after hot-corrosion test reveals the laminar and continuous structure (Figure 4) is transformed to a porous structure due to the ...
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Hot Corrosion Behavior of Magnesite – Chromite Refractories Used in Reverberatory Furnaces at Sarcheshmeh Copper Complex
... intense corrosion rates encountered in this area. Hot corrosion resistance of magnesite-chromite refractories used in the reverberatory copper smelting furnaces is directly influenced by ...
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COMBATING HOT CORROSION OF BOILER TUBES WITH DETONATION GUN SPRAYED COATINGS: A REVIEW
... their corrosion behaviour became an object of scientific investigation since ...long.Hot corrosion is a serious problem in boilers, gas turbines, internal combustion engines, and industrial waste ...
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Evaluations of Hot Corrosion Behavior of Al2O3 Thermal Spray Coatings with ZrO2 Reinforcements on T 91 Steel
... temperature of 900°C inside a furnace for 50 cycles. Each cycle consisted of 1hr heating and 20 min cooling at room temperature. Results were examined using the visual inspection, weight change measurement, X-ray ...
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Monitoring of Hot Corrosion Behaviors for Alloys and Aluminide Coatings under Molten Sulfate Film with Thermal Cycles
... Hot corrosion occurs on the metallic components of jet engines, gas turbines, boilers and waste burning furnaces [1, ...accelerated corrosion caused by the existence of molten salt on the surface of ...
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Fuzzy Logic Model to Predict Hot Corrosion in Molten Salt of Steel-SA213T92 Coated by Plasma Sprayed YSZ
... and corrosion resistance, thermal orelectrical insulation can be achieved using different coating techniques and coating ...a hot corrosion resistant coating is to serve as an effective ...
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Analysis of combined static load and low temperature hot corrosion induced cracking in CMSX-4 at 550°C
... under hot corrosion conditions and SEM, (S)TEM and EDX techniques were used to analyse the cracking ...the corrosion mechanism ’ s preference to interact with either the γ or γʹ was ...
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Hot Corrosion Resistance of Al2O3 Coating Produced by Thermal Spray
... to hot corrosion polarization curves which generally frame system general corrosion are obtained where the three curves show a cathodic region where the metal dissolution predominates in which the ...
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Hot Corrosion Behavior of FeAl Intermetallic Compound Modified with Ti, and Cr in Molten Salt Mixture KCl-ZnCl2
... The anodic current density of binary Fe40Al alloy increased with increasing potential, but at around 90 mV a kind of anodic limiting current density was reached. This behavior may be due to the formation of a layer of ...
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Hot Corrosion Behaviour of NiCrFeNbMoTiAl Coating in Molten Salts at 700°c by Electrochemical Techniques
... of corrosion by molten salts in protective metallic coatings, cylindrical test pieces of 5mm in diameter, 25mm height were made of SA213 – T22 (2 ¼ Cr -1Mo) ...
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Hot Corrosion Behavior of FeAl Intermetallic Compound Modified with Silver in Molten Salt Mixture
... the corrosion rate. Besides, corrosion potential of Fe- Al-Ag alloy resulted ...noble corrosion potential but a bigger corrosion rate than the 304 SS specimen corroded under the same ...
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Comparison of the Corrosion Resistance of Commercial coated steel and hot-dip Zn Coatings under Changing Environmental Conditions
... The corrosion properties of selected metal-coated samples were tested at room temperature for the following values of pH: 3, 5, 7, 9 and 11, under two dissolved oxygen concentrations (self- ...
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Optimization of the Electrochemical Acceleration for Actual Corrosion Behavior of Hot Dip Aluminized Ferritic Stainless Steel in NaCl Solution
... The chemical composition of the interdiffusion layer was investigated using energy dispersive X-ray spectroscopy (EDS) after the aluminized layer was removed by the NaOH solution. Scanning electron microscopy (SEM) was ...
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Evaluation of the Corrosion of AZ31 Magnesium Alloy Used as Sacrificial Anode for Cathodic Protection of Hot-Water Tank Storage Containing Chloride
... of corrosion products in granular shape deposited on the smoother metal substrate, though presenting the development of ...of corrosion deposits on the metal surface, presenting needle- shaped aggregates of ...
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Electrochemical Corrosion Behavior of AISI 409L Stainless Steel Aluminized by Hot Dip Coating Method in Automotive Exhaust Gas Solution
... the corrosion behavior of coated material, most of research has focused on the sacrificial anode effect of Al ...the corrosion resistance or high temperature oxidation resistance of aluminized materials were ...
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Corrosion Behavior of Hot-dip Galvanized Advanced High Strength Steel Sheet in a Simulated Marine Atmospheric Environment
... galvanic corrosion between zinc and the steel ...the corrosion potential of steel materials in ...chloride-induced corrosion, which corresponds well with the corrosion morphology observation ...
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Hot money
... Whether or not a policy is time consistent depends critically on how many instruments a government in any period has to influence its successor relative to how many choices the successor[r] ...
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